<template>
  <view>
    <view class="goods-list">
      <view v-for="(item,index) in goodsList" :key="index" @click="gotoDetail(item)">
        <my-goods :goods="item"></my-goods>
      </view>
    </view>
  </view>
</template>

<script>
  export default {
    data() {
      return {
        // 请求参数对象
        queryObj: {
          query: '',
          cid: '',
          pagenum: 1,
          pagesize: 10
        },
        goodsList: [],
        total: 0,
        isloading: false // 节流阀
      };
    },
    onLoad(options) {
      this.queryObj.query = options.query || ''
      this.queryObj.cid = options.cid || ''
      this.getGoodsList()
    },
    methods: {
      // 获取商品列表数据
      async getGoodsList(cb) {
        // 打开节流阀
        this.isloading = true
        const {
          data: res
        } = await uni.$http.get('/api/public/v1/goods/search', this.queryObj)
        // 请求完成之后关闭节流阀
        this.isloading = false
        // 回调函数 请求完成后关闭下拉刷新效果
        cb && cb()
        if (res.meta.status !== 200) return uni.$showMsg()
        // 通过展开运算符的形式，进行新旧数据的拼接
        this.goodsList = [...this.goodsList, ...res.message.goods]
        this.total = res.message.total
      },
      gotoDetail(item) {
        uni.navigateTo({
          url:'/subpkg/goods_detail/goods_detail?goods_id=' + item.goods_id
        })
      }
    },
    // 下拉触底
    onReachBottom() {
      if (this.queryObj.pagenum * this.queryObj.pagesize >= this.total) return uni.$showMsg('已经到底了！')
      if (this.isloading) return
      // 让页码值自增 +1
      this.queryObj.pagenum++
      // 重新获取列表数据
      this.getGoodsList()
    },
    // 上拉刷新
    onPullDownRefresh() {
      // 重置关键数据
      this.queryObj.pagenum = 1
      this.total = 0
      this.isloading = false
      this.goodsList = []
      // 重新发起数据请求
      this.getGoodsList(()=>{
        uni.stopPullDownRefresh()
      })
    }
  }
</script>

<style lang="scss">

</style>
